/**   
* @Title: RedisService.java
* @Package org.xaoyaoyao.spider.redis
* @Description: TODO
* @author xaoyaoyao
* @date Jan 25, 2019 1:16:17 PM
* @version V1.0   
*/
package org.xaoyaoyao.spider.redis;

import java.io.UnsupportedEncodingException;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;

import javax.annotation.Resource;

import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;

import lombok.extern.slf4j.Slf4j;

/**
 * @ClassName: RedisService
 * @Description: TODO
 * @author xaoyaoyao
 * @date Jan 25, 2019 1:16:17 PM
 * 
 */
@Slf4j
@Component
public class RedisService {

	private final static String DEFAULT_ENCODING = "utf-8";

	@Resource
	private RedisTemplate<String, Object> redisTemplate;

	/**
	 * @Title: expire
	 * @Description: 指定缓存失效时间
	 * @param key
	 *            键
	 * @param time
	 *            时间(秒)
	 * @return boolean
	 */
	public boolean expire(String key, long time) {
		try {
			if (time > 0) {
				redisTemplate.expire(key, time, TimeUnit.SECONDS);
			}
			return true;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return false;
		}
	}

	/**
	 * @Title: getExpire
	 * @Description: 根据key 获取过期时间
	 * @param key
	 *            键 不能为null
	 * @return long 时间(秒) 返回0代表为永久有效
	 */
	public long getExpire(String key) {
		return redisTemplate.getExpire(key, TimeUnit.SECONDS);
	}

	/**
	 * @Title: hasKey
	 * @Description: 判断key是否存在
	 * @param key
	 *            存在 false不存在
	 * @return boolean
	 */
	public boolean hasKey(String key) {
		try {
			return redisTemplate.hasKey(key);
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return false;
		}
	}

	/**
	 * @Title: del
	 * @Description: 删除缓存
	 * @param key
	 *            可以传一个值 或多个
	 * @return void
	 */
	@SuppressWarnings("unchecked")
	public void del(String... key) {
		if (key != null && key.length > 0) {
			if (key.length == 1) {
				redisTemplate.delete(key[0]);
			} else {
				redisTemplate.delete(CollectionUtils.arrayToList(key));
			}
		}
	}

	/**
	 * @Title: get
	 * @Description: 普通缓存获取
	 * @param key
	 *            键
	 * @return Object
	 */
	public Object get(String key) {
		return key == null ? null : redisTemplate.opsForValue().get(key);
	}

	/**
	 * @Title: set
	 * @Description: 普通缓存放入
	 * @param key
	 * @param value
	 * @return boolean true成功 false失败
	 */
	public boolean set(String key, Object value) {
		try {
			redisTemplate.opsForValue().set(key, value);
			return true;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return false;
		}

	}

	/**
	 * @Title: set
	 * @Description: 普通缓存放入并设置时间
	 * @param key
	 * @param value
	 * @param time
	 *            时间(秒) time要大于0 如果time小于等于0 将设置无限期
	 * @return boolean true成功 false 失败
	 */
	public boolean set(String key, Object value, long time) {
		try {
			if (time > 0) {
				redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
			} else {
				set(key, value);
			}
			return true;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return false;
		}
	}

	/**
	 * @Title: incr
	 * @Description: 递增
	 * @param key
	 * @param delta
	 *            要增加几(大于0)
	 * @return long
	 */
	public long incr(String key, long delta) {
		if (delta < 0) {
			throw new RuntimeException("递增因子必须大于0");
		}
		return redisTemplate.opsForValue().increment(key, delta);
	}

	/**
	 * @Title: decr
	 * @Description: 递减
	 * @param key
	 * @param delta
	 *            要减少几(小于0)
	 * @return long
	 */
	public long decr(String key, long delta) {
		if (delta < 0) {
			throw new RuntimeException("递减因子必须大于0");
		}
		return redisTemplate.opsForValue().increment(key, -delta);
	}

	/**
	 * @Title: hget
	 * @Description: HashGet
	 * @param key
	 * @param item
	 * @return Object
	 */
	public Object hget(String key, String item) {
		return redisTemplate.opsForHash().get(key, item);
	}

	/**
	 * @Title: hmget
	 * @Description: 获取hashKey对应的所有键值
	 * @param key
	 * @return Map<Object,Object>
	 */
	@SuppressWarnings("rawtypes")
	public Map hmget(String key) {
		return redisTemplate.opsForHash().entries(key);
	}

	/**
	 * @Title: hmset
	 * @Description: HashSet
	 * @param key
	 * @param map
	 *            对应多个键值
	 * @return boolean true 成功 false 失败
	 */
	@SuppressWarnings({ "unchecked", "rawtypes" })
	public boolean hmset(String key, Map map) {
		try {
			redisTemplate.opsForHash().putAll(key, map);
			return true;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return false;
		}
	}

	/**
	 * @Title: hmset
	 * @Description: HashSet 并设置时间
	 * @param key
	 *            键
	 * @param map
	 *            对应多个键值
	 * @param time
	 *            时间(秒)
	 * @return boolean
	 */
	@SuppressWarnings({ "unchecked", "rawtypes" })
	public boolean hmset(String key, Map map, long time) {
		try {
			redisTemplate.opsForHash().putAll(key, map);
			if (time > 0) {
				expire(key, time);
			}
			return true;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return false;
		}
	}

	/**
	 * @Title: hset
	 * @Description: 向一张hash表中放入数据,如果不存在将创建
	 * @param key
	 * @param item
	 * @param value
	 * @return boolean true 成功 false失败
	 */
	public boolean hset(String key, String item, Object value) {
		try {
			redisTemplate.opsForHash().put(key, item, value);
			return true;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return false;
		}
	}

	/**
	 * @Title: hset
	 * @Description: 向一张hash表中放入数据,如果不存在将创建
	 * @param key
	 * @param item
	 * @param value
	 * @param time
	 *            时间(秒) 注意:如果已存在的hash表有时间,这里将会替换原有的时间
	 * @return boolean
	 */
	public boolean hset(String key, String item, Object value, long time) {
		try {
			redisTemplate.opsForHash().put(key, item, value);
			if (time > 0) {
				expire(key, time);
			}
			return true;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return false;
		}
	}

	/**
	 * @Title: hdel
	 * @Description: 删除hash表中的值
	 * @param key
	 * @param item
	 * @return void
	 */
	public void hdel(String key, Object... item) {
		redisTemplate.opsForHash().delete(key, item);
	}

	/**
	 * @Title: hHasKey
	 * @Description: 判断hash表中是否有该项的值
	 * @param key
	 * @param item
	 * @return boolean
	 */
	public boolean hHasKey(String key, String item) {
		return redisTemplate.opsForHash().hasKey(key, item);
	}

	/**
	 * @Title: hincr
	 * @Description: hash递增 如果不存在,就会创建一个 并把新增后的值返回
	 * @param key
	 * @param item
	 * @param by
	 *            要增加几(大于0)
	 * @return double
	 */
	public double hincr(String key, String item, double by) {
		return redisTemplate.opsForHash().increment(key, item, by);
	}

	/**
	 * @Title: hdecr
	 * @Description: hash递减
	 * @param key
	 * @param item
	 * @param by
	 *            要减少记(小于0)
	 * @return double
	 */
	public double hdecr(String key, String item, double by) {
		return redisTemplate.opsForHash().increment(key, item, -by);
	}

	/**
	 * @Title: sGet
	 * @Description: 根据key获取Set中的所有值
	 * @param key
	 * @return Set<Object>
	 */
	public Set<Object> sGet(String key) {
		try {
			return redisTemplate.opsForSet().members(key);
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return null;
		}
	}

	/**
	 * @Title: sHasKey
	 * @Description: 根据value从一个set中查询,是否存在
	 * @param key
	 * @param value
	 * @return boolean
	 */
	public boolean sHasKey(String key, Object value) {
		try {
			return redisTemplate.opsForSet().isMember(key, value);
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return false;
		}
	}

	/**
	 * @Title: sSet
	 * @Description: 将数据放入set缓存
	 * @param key
	 * @param values
	 * @return long
	 */
	public long sSet(String key, Object... values) {
		try {
			return redisTemplate.opsForSet().add(key, values);
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return 0;
		}
	}

	/**
	 * @Title: sSetAndTime
	 * @Description: 将set数据放入缓存
	 * @param key
	 * @param time
	 * @param values
	 * @return long
	 */
	public long sSetAndTime(String key, long time, Object... values) {
		try {
			Long count = redisTemplate.opsForSet().add(key, values);
			if (time > 0)
				expire(key, time);
			return count;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return 0;
		}
	}

	/**
	 * @Title: sGetSetSize
	 * @Description: 获取set缓存的长度
	 * @param key
	 * @return long
	 */
	public long sGetSetSize(String key) {
		try {
			return redisTemplate.opsForSet().size(key);
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return 0;
		}
	}

	/**
	 * @Title: setRemove
	 * @Description: 移除值为value的
	 * @param key
	 * @param values
	 * @return long 移除的个数
	 */
	public long setRemove(String key, Object... values) {
		try {
			Long count = redisTemplate.opsForSet().remove(key, values);
			return count;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return 0;
		}
	}

	/**
	 * @Title: lGet
	 * @Description: 获取list缓存的内容
	 * @param key
	 * @param start
	 *            开始
	 * @param end
	 *            结束 0 到 -1代表所有值
	 * @return List<Object>
	 */
	public List<Object> lGet(String key, long start, long end) {
		try {
			return redisTemplate.opsForList().range(key, start, end);
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return null;
		}
	}

	/**
	 * @Title: lGetListSize
	 * @Description: 获取list缓存的长度
	 * @param key
	 * @return long
	 */
	public long lGetListSize(String key) {
		try {
			return redisTemplate.opsForList().size(key);
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return 0;
		}
	}

	/**
	 * @Title: lGetIndex
	 * @Description: 通过索引 获取list中的值
	 * @param key
	 * @param index
	 *            索引 index>=0时， 0 表头，1 第二个元素，依次类推；index<0时，-1，表尾，-2倒数第二个元素，依次类推
	 * @return Object
	 */
	public Object lGetIndex(String key, long index) {
		try {
			return redisTemplate.opsForList().index(key, index);
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return null;
		}
	}

	/**
	 * @Title: lSet
	 * @Description: 将list放入缓存
	 * @param key
	 * @param value
	 * @return boolean
	 */
	public boolean lSet(String key, Object value) {
		try {
			redisTemplate.opsForList().rightPush(key, value);
			return true;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return false;
		}
	}

	/**
	 * @Title: lSet
	 * @Description: 将list放入缓存
	 * @param key
	 * @param value
	 * @param time
	 *            时间(秒)
	 * @return boolean
	 */
	public boolean lSet(String key, Object value, long time) {
		try {
			redisTemplate.opsForList().rightPush(key, value);
			if (time > 0)
				expire(key, time);
			return true;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return false;
		}
	}

	/**
	 * @Title: lSet
	 * @Description: 将list放入缓存
	 * @param key
	 * @param value
	 * @return boolean
	 */
	public boolean lSet(String key, List<Object> value) {
		try {
			redisTemplate.opsForList().rightPushAll(key, value);
			return true;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return false;
		}
	}

	/**
	 * @Title: lSet
	 * @Description: 将list放入缓存
	 * @param key
	 * @param value
	 * @param time
	 *            时间(秒)
	 * @return boolean
	 */
	public boolean lSet(String key, List<Object> value, long time) {
		try {
			redisTemplate.opsForList().rightPushAll(key, value);
			if (time > 0)
				expire(key, time);
			return true;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return false;
		}
	}

	/**
	 * @Title: lUpdateIndex @Description: 根据索引修改list中的某条数据 @param key 键 @param
	 *         index 索引 @param value 值 @return @return boolean @throws
	 */
	public boolean lUpdateIndex(String key, long index, Object value) {
		try {
			redisTemplate.opsForList().set(key, index, value);
			return true;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return false;
		}
	}

	/**
	 * @Title: lRemove
	 * @Description: 移除N个值为value
	 * @param key
	 *            键
	 * @param count
	 *            String
	 * @param value
	 *            值
	 * @return long 移除的个数
	 */
	public long lRemove(String key, long count, Object value) {
		try {
			Long remove = redisTemplate.opsForList().remove(key, count, value);
			return remove;
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			return 0;
		}
	}

	public void hdel(final String key, final String field) {
		redisTemplate.opsForHash().delete(key, field);
	}

	public String rpop(final String key) {
		return redisTemplate.execute(new RedisCallback<String>() {
			public String doInRedis(RedisConnection connection) throws DataAccessException {
				byte[] result = connection.rPop(key.getBytes());
				if (result != null) {
					try {
						return new String(result, DEFAULT_ENCODING);
					} catch (UnsupportedEncodingException e) {
						log.error(e.getMessage(), e);
					}
				}
				return "";
			}
		});
	}

	public long rpush(final String key, final int liveTime, final String... values) {
		return redisTemplate.execute(new RedisCallback<Long>() {
			public Long doInRedis(RedisConnection connection) throws DataAccessException {
				long result = 0;
				for (String v : values) {
					connection.rPush(key.getBytes(), v.getBytes());
				}
				if (liveTime > 0) {
					connection.expire(key.getBytes(), liveTime);
				}
				return result;
			}
		});
	}

	public String lset(final String key, final long index, final String value) {
		return redisTemplate.execute(new RedisCallback<String>() {
			public String doInRedis(RedisConnection connection) throws DataAccessException {
				connection.lSet(key.getBytes(), index, value.getBytes());
				return "success";
			}
		});
	}

	public long lpush(String key, String... values) {
		return this.lpush(key, 0, values);
	}

	public long lpush(final String key, final long liveTime, final String... values) {
		return redisTemplate.execute(new RedisCallback<Long>() {
			public Long doInRedis(RedisConnection connection) throws DataAccessException {
				long result = 0;
				for (String v : values) {
					result = connection.lPush(key.getBytes(), v.getBytes());
				}
				if (liveTime > 0) {
					connection.expire(key.getBytes(), liveTime);
				}
				return result;
			}
		});
	}

	public long llen(final String key) {
		return redisTemplate.execute(new RedisCallback<Long>() {
			public Long doInRedis(RedisConnection connection) throws DataAccessException {
				return connection.lLen(key.getBytes());
			}
		});
	}

	public long lrem(final String key, final long count, final String value) {
		return redisTemplate.execute(new RedisCallback<Long>() {
			public Long doInRedis(RedisConnection connection) throws DataAccessException {
				return connection.lRem(key.getBytes(), count, value.getBytes());
			}
		});
	}

	public List<byte[]> hvals(final String key) {
		return redisTemplate.execute(new RedisCallback<List<byte[]>>() {
			@Override
			public List<byte[]> doInRedis(RedisConnection connection) throws DataAccessException {
				return connection.hVals(key.getBytes());
			}
		}, true);
	}

}
